Qt Creator 6 uses too wide line spacing

Please see the attached screenshots of Qt Creator 5 and Qt Creator 6 displaying the same code.  You can see that for Qt Creator 6 there is a lot more spacing between lines of code, resulting in far fewer lines being displayed on the screen, even though the font settings are the same in both versions (Monaco 12).

I suspect that this is an issue with Qt 6 rather than Qt Creator, because the same spacing problems exist in the settings dialog in the Text Editor settings.

Is it possible to adjust this, preferably by default?